APA (7th ed.) Zitazioa

Vousden, N. (1990). The economics of trade protection. Cambridge University Press.

Chicago Style (17th ed.) Zitazioa

Vousden, Neil. The Economics of Trade Protection. Cambridge ; New York: Cambridge University Press, 1990.

MLA (9th ed.) Zitazioa

Vousden, Neil. The Economics of Trade Protection. Cambridge University Press, 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.